In the quiet midnight, the entire abandoned hospital was enveloped in an inextricably thick darkness, like a dormant giant beast with its dark mouth open, swallowing up all the dim light of the stars and moon around it. The night wind carried the remaining leaves and brushed against the mottled outer wall, emitting a thin sob. Mixed with the sound of wind leaking from the cracks in the wall, it actually looked like a vague sob, circling in the empty alleys, arousing the cowardice in people's hearts. The wall is covered with dark green mold spots, which have been swollen and peeled by years of moisture. The scum will rustle down when the fingertips touch it. The cold and wet stickiness penetrates along the fingertips, carrying a lingering pungent rotten smell - rotten wood and mold, mixed with an indescribable fishy sweetness.